Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
An Experimental Self-Stressing Pavement, Route 2, Glastonbury. 3. Final Report
In 1963 three slabs 24 ft x 500 ft x 6 in thick were placed on Rte. 2 in Glastonbury, Connecticut. Longitudinal steel consisted of 21-1/2 in 7-wire strands on 14 in centers and transverse steel consisted of no. 7 re-bars on 2 ft centers. The concrete contained calcium sulfo-aluminate anhydrite which expanded on hydration and stretched the steel to create a self-stressing prestressed pavement. Growth of each slab was about 1 foot which was only 1/3 of that needed. Hence, the pavement cracked and behaved similar to a continuously reinforced concrete pavement. Sleeper slabs, special terminal joints and a bond-breaking medium were used in the construction. Strains in the steel, length changes of the slabs, crack intervals, crack openings, traffic, and surface condition were all observed for 8 years and the results are discussed. The adjacent jointed pavement has encroached the expansion space of the slabs and the surface condition is poor. Resurfacing may soon be necessary. Two previous published reports in HRB Records provide more details. (BPR abstract)
An Experimental Self-Stressing Pavement, Route 2, Glastonbury. 3. Final Report
In 1963 three slabs 24 ft x 500 ft x 6 in thick were placed on Rte. 2 in Glastonbury, Connecticut. Longitudinal steel consisted of 21-1/2 in 7-wire strands on 14 in centers and transverse steel consisted of no. 7 re-bars on 2 ft centers. The concrete contained calcium sulfo-aluminate anhydrite which expanded on hydration and stretched the steel to create a self-stressing prestressed pavement. Growth of each slab was about 1 foot which was only 1/3 of that needed. Hence, the pavement cracked and behaved similar to a continuously reinforced concrete pavement. Sleeper slabs, special terminal joints and a bond-breaking medium were used in the construction. Strains in the steel, length changes of the slabs, crack intervals, crack openings, traffic, and surface condition were all observed for 8 years and the results are discussed. The adjacent jointed pavement has encroached the expansion space of the slabs and the surface condition is poor. Resurfacing may soon be necessary. Two previous published reports in HRB Records provide more details. (BPR abstract)
An Experimental Self-Stressing Pavement, Route 2, Glastonbury. 3. Final Report
D. G. Bowers (Autor:in)
1971
40 pages
Report
Keine Angabe
Englisch
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